Home / 918,072.60-1,376,161.20-412,875.60

Finding the Fourth Proportional to 918,072.60, 1,376,161.20 and 412,875.60

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Solution

The fourth proportional to 918,072.60, 1,376,161.20 and 412,875.60 is: 618,887.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,072.60 : 1,376,161.20 = 412,875.60 : x
  2. Step 2: Convert to fraction form
    918,072.60/1,376,161.20 = 412,875.60/x
  3. Step 3: Cross multiply
    918,072.60x = 1,376,161.20 × 412,875.60
  4. Step 4: Simplify right side
    918,072.60x = 568,183,381,146.72
  5. Step 5: Solve for x
    x = 568,183,381,146.72/918,072.60
  6. Step 6: Final answer
    x = 618,887.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.